Refrigeration



Dec. 22, 1931. c. E. PLOEGER ET AL f 1,838-01 REFRIGERATION ssheets-sheet' i Filed 061;. 27, 1930 INET?? E BY j-W f AY 'o l l ATTORNYDec. 22, 1931. c. E. PLOEGER ET AL 1,338,041

REFHIGERATION Filed Oct. 27, 1930 3 SheetsfSheet 2 ATTORNEY Dec. 2v2,1931. c.V E, PLOEGER .E1-Al. 1,838,041

REFRIGERATION Filed Oct. 27, 1930- I5 Sheets-Sheet 3 BY E g G2(ATTORNEYS.

APatented Dec. 22, 1931 PATENT OFFICE WILLIAM D. ooLLINs, F EvANsvILLE,INDIANA, AssIGNoEs @To rNc or NEW YORK, N. Y., A CORPORATION or DELAWARE*,'lhisinventiqnrelatesto 4mechanical refrigerationgand .more:particularly to a method .of:imountingf` refrigerating apparatus sothat `itncanbe det-achably-assembled as a unit ,r with arefrigeratpr; v

It -isj onternplatdby this invention that theevaporatorfisf-positionedwithin the refrigeratingfchamberfof a refrigerator, the motordrivengcompressor unit and the condensers areiinfanapparatus` chamberbelow gthe,retrigerating.chamber7 and a iue in the rear ofthelrefrig'erator communicates with the.apparatusfchambertto;induce adraft of airentering thegbottomfof the refrigerator fortcoolingthev,condensers andthe motor- Y. compresSOlrllll-z;Itfisdesirable that the refrigerating apparatus 'sbe :assembled as asini gle unit which is easily placed in position in the.arefrigerator.;l` and; easily detached therefrom.Toaccomplish` thisthere is provided y airaine ,so constructed that the condensersandf-motorv-compressor unitimounted on the base;l thereofwillkfbegpositioned in the apparatusfV-,ompartment and the evaporatormountedwon ,theumiejcy .portion will be posi- :jtionedv a iin'.r the 5rcfrigerating compartment when` the trarnel .with the apparatus mount-@d'tlleijenforming-a lunit, is assembled with therexfrigerator: c 1 z`flheinventionfwill-bebetter understood by f 3 frefwerencey to, ,the ,1following description taken `inec'mmectien with the drawings in which4.I1`-1g.1 la' arlelevation of a refrlgerating fbordyi-ng gthisinvention 2,-;a Asectional .view along the line Figa unit; BieA Fig. 3,partlyin l-vertical 5 section showing the` refrigerati"` g unit-Positionedin a refrigerator Cabinet; i 1,15. j j

52.,..r-Figf agmentary sectional view-on the lflemofjligfaand-1f= rFigy.ll 5,a.view similar to Fig. `21shovving a Condenser. modiqed;Construction,

Referring to Figs. 1 1 and .2,v the refrigerata partly in elevation 'andEEEEIGEEATION fappncaaon mea october 27, 1930. seriai No. 491,427.

open at the bottom and top and plates 14 and 15 welded in place to formparallel parti.

tions which divide this box structure into a central section and twoequal end sections. The partition plates 14 and 15 do not extend thefull width of the side plates 11 and 13 but have port-ions 16 ofextended width above the side plates as may be seen in Figs. 1 and 3.

The bottom-of the central section of the base between the plates 14 and15 is closed by a sheet metal plate 18 uponK which a hermetically sealedmotor-compressor unit 19 is suitably mounted and secured by bolts 20. Aycircular opening 21 is provided in the plate 18 directly under themotor-compressor unit to allow air coming through the bottom of therefrigerator to pass upwardly around the unit and through the radiatingfins 22 for dissipating heat generated in the unit. A

In the end section of the base between the end plate 10 and thepartition plate 14 there is disposed a condenser which may consist ofcoils 23 formed V of tubing wound back and forth through suitableopenings in plates 11 and 13. The condenser is provided with transverseradiating ns 24 which extend across the coils between the end plate 10and partition plate 14. A similar condenser is positioned in the endsection of the base on the other side of the motor-compressor unitbetween end plate 12" and partition plate 15 r and thetwo condensers areconnected in se'- 14 and 15 at their extended portions 16. At

the top of the vertical portion of the frame there is vsecured a sectionof heat insulated l refrigerator wall-25 upon which the evaporator 26 ismounted as by lugs 42 in such a position that when the frame is secured1n Vplace in the refrigerator thek evaporator will be positioned withinthe refrigerating chamber-27 and the wallsection 25 will close anopening 28 in the refrigerating chamber wall .29 'through which 'theevaporator was inserted.

Avapor suction line 30 connects the evaporator 26 and the intake 31 ofthe hermetically sealed motor-compressorunit 19 which dischargescompressed refrigerant vapor through conduits 32 to the condenser coils24. Liquid refrigerant from the'condenser is returned to the evaporatorthrough conduits 33 and 34 between which there is a rcfrigerant supplycontrol means 35.

The refrigerator may be of, any well known construction comprising arefrigerating chamber 27 with heat insulated walls 29 and an apparatusspace 36 immediately below the refrigerator chamber. An opening 28 isprovided in the rear wall of the refrigerating compartment through whichthe evaporator is inserted when the apparatus unit is assembled with therefrigerator as explained herein. The apparatus space in the lower partof the refrigerator is open at the bottom and at the rear end is in opencommunication with a fiue 37 which extends up the rear of therefrigerator and is formed between the wall of therefrigerating chamberand the sheet metal plate 38 suitably attached.

AReferring to Figs. 3 and 4 of the drawings, when the refrigeratingapparatus mounted on the frame and forming a single unit is assembledwith the refrigerator, the ue casing 38 being removed, the apparatusunit can be inserted from the rear. When in position the base of theframe on which is mounted the condensers and the motorcompressor unit iswithin' the apparatus chamber in the lower part of the refrigerator, theangle` irons or vertical portion of the frame extend upwardly within theiin-e, the

evaporator 26 is within the refrigerating chamber 27 and the wallsection 25 which carries the evaporator and is mounted onthe upper partof the frame closes an opening 28 in the rear wall of the refrigeratingchamber through which the evaporator was inserted. l f

A suitable gasket 39 between a ledge 40 around the4 opening` in th-erefrigerator chamber wall and the closure member 25 seals the jointbetween the closure member and the wall.

` The apparatus unit may be secured in any desired manner and the flueplate 38 placed in position. When the apparatus unit is thus assembledwith the refrigerator there isV a complete path for air circulation fromthe bottom of the refrigerator which is open, up through the condensercoils in the end sections of the base portion of the frame and upwardlythrough the iiue in the rear of the refrigerator. As explained above,air for cooling the motor-compressor unit passes upwardly from the openbottom `of the refrigerator through the-'opening 21 in the mountingplate 18, through the heat radiating fins 22 and up theliue 37 in theback of the refrigerator.

In a construction according to this invention air for cooling thecondensers will not have previously been warmed by coming in contactwith the motor-compressor unit and due to the draft induced by the flueat the back of the refrigerator air which has been utilized to cool themotor-compressor unit will notcome in contact with the condenser coils,which is a factor conducive to high efficiency.

Obviously, many modifications may be made within the scope of thisinvention, for instance, as shown in Fig. 5 the base portion may bemodified by extending end plates 10 and 12 and adding member 41 toaccommodate condenser coils 42 to afford greater condenser coolingsurface. Conforming to the inventive thought in this arrangement also,the air for coolingthe condensers will not have been previously warmedby contact with the motor-compressor unit.

It will be obvious 'to those skilled in the artthat various otherchanges may be made in the construction and arrangement withoutdeparting from the spirit of the invention and therefore the inventionis not limited to what is shown in the drawings and described in thespecification but only as indicated in the appended claims.

We claim:

1. A refrigerator including an apparatus compartment, a fiue extendingtherefrom and forming a` continuous passage therewith, a refrigeratingcompartment above said apparatus compartment and formed in part by awall having an aperture therein, a

refrigerating unit including a frame, a compressor mounted on saidframe, a closure member for said aperture mounted on sa1d frame, anevaporator supported by said cloi sure member and adapted to be insertedthrough said aperture, condensers mounted on said frame, saidrefrigerating unit adapted to be secured in such .position that theevaporator is within the refrigerating chamber, the closure member sealsthe aperture, the compressor is within the apparatus chamber and thecondensers are within said passageway.

2. A refrigerator including an apparatus compartment having air inletopenings therein, a vertical flue extending from said apparatuscompartment, a -refrigerating compartment positioned vabove said apparaptus compartment and' having an opening in 'a wall thereof, arefrigerating apparatus including a vertical frame, a compressor unitsupported from the lower portion of said frame, a closure member forsaid opening mountedon said frame, an evaporator supported by saidclosure member and adapted to be inserted through/saidl opening,condensers mounted on saidv framexin spaced horiin the refrigeratingchamber, the closure member seals the opening, and the compressor andcondensers are within-the apparatus chamber. f,

3. A refrigerator comprising, in combination, a cabinet structureincluding an apparatus compartment with one or more air inlet openingstherein, a refrigerating compartment above said apparatus compartmentand formed in part by a rear wall having an Vaperture therein, avertical flue at the rear of said compartments forming a continuouspassageway with the apparatus compartment for air from said inletopenings, a refrigerating unit including a vertical frame, a compressorunit supported from the lower part of said frame, condensers supportedby said frame in spaced horizontal relation with said compressor unit, aclosure member for said aperture mounted on the upper part of saidframe, an evaporator supported on said closure member and adapted to beinserted through said aperture, connecting conduits between andy controldevices for said compressor, condensers and evaporator mountedintegrally withA said refrigerating unit, said refrigerating unitadapted to be removably secured in said cabinet structure so that theevaporator is within the refrigerating chamber, the closure -nemberseals the aperture, and the compressor unit and the condensers arewithin the apparatus chamber.

4. A refrigerator including an'apparatus compartment, a iue extendingtherefrom, a refrigerating compartment abovesaid apparatus compartment,av frame, arefrigerating unit mounted on said frame and including acompressor on the lower portion of the frame andan evaporator on theupper portion of the frame, said frame and refrigerating unit adapted tobe secured in such position that the evaporator is withinl therefrigerating chamber and the frame in the flue. K

5. A'refrige'rator comprising a cabinet including an apparatuscompartment andka refrigerating compartment above saidgapparatuscompartment having an aperture in a wall thereof, and refrigeratingapparatus including a condensing unit, a frame, and an evaporator\supported vlaterally from said frame, said refrigerating apparatusadapted to be removably secured as a unit in said cabinet, so that theevaporator iextendsinto the refrigerating chamber through saidaperture.-

'6. Alrefrigerator comprising a cabinet i'ncluding anapparatuscompartment and a refrigeratlng compartment above sa1dapparatus compartment having an aperture 1n a wall thereof, andrefrigerating apparatus including a condensing unit, a frame, and anevaporator supported laterally fromsaid frame, said refrigeratingapparatus being removably secured as a unit in said cabinet, with theevaporator extending into the refrigerating chamber through saidaperture and the condensing unit disposed in the apparatus compartment.

7 A refrigerator comprising a cabinet having a refrigerating compartmentand an apparatus compartment beneath the refrigerating compartment, saidapparatus compartment being open at its bottom, and said cabinet havinga flue extending upwardly from the apparatus compartment for creating anatural draft therethrough, and refrigera-ting mechanism removable as aunit from. said cabinet, and including an evaporator for location in therefrigerating compartment and compressor condenser mechanism located inthe apparatus compartment, said compressor condenser structure formingthe bottom of the cabinet. Y y' 8; A refrigerator cabinet comprising anapparatus compartment, flue means for drawrelatively flat in outlinedisposed substantially horizontally in substantially the lower portionof the apparatus compartment, and a compresser spaced substantiallyhorizontally relative to said condenser.

9. A refrigerator cabinet comprising an apparatus compartment, liucmeans for drawing air through said compartment, and refrigeratingmechanism removable as a unit from said refrigerator cabinet andincluding a condenser relatively flat in outline disposed substantiallyhorizontally in substantially the lower portion of the apparatuscompartment, and a compresser spaced substantially horizontally relativeto said condenser.

10. A refrigerator having a refrigerating compartment, an adjacentapparatus compartment, a chamber extending from the apparatuscompartment in overlapping relation to the refrigerating compartment, aremovable refrigeratlng unit comprlslng a frame for location in saidchamber, and evaporating ing mechanism for cooling the refrigerating ycompartment supported by said frame,

In testimony whereof we afHx our signa` tures.

WILLIAM D. COLLINS. CLYDE E. PLOEGER.

- l DISCLAIMER 1,838,041f-Olyde E. Ploeger and William D. Collins,Evansville, Ind. REFRIGERA- 'K TioN.y Q lPatent dated December 22,1931.Disclaimer filed August 24, 1934,

by the assignee', Serpel, Inc. u j Herewith enters this disclaimerl toclaim 5 thereof, to Wit:

.5. A refrigerator comprising a cabinet including an apparatuscompartment and a refrlgerating compartment above said apparatuscompartment having an aperture in a- Wall thereof, and refrigeratingapparatus including a condensing unit, a frame,

and an evaporator supported `laterally from said frame,saidrefrigerating apparatus adapted to bev removablg,7 secured as a unitin said'cabinet, so that the evaporator extends ,into the refrigeratingchamber through said aperture. f v

[Oficial Gazette September 18, 1.934.]

